linux-kernel - [PATCH v1 0/2] soi: Don't call DMA sync API when not needed

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Date: Wed, 22 May 2024 20:09:48 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Mark Brown <broonie@...nel.org>,
	linux-spi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 0/2] soi: Don't call DMA sync API when not needed

A couple of fixes to avoid calling DMA sync API when it's not needed.
This doesn't stop from discussing if IOMMU code is doing the right thing,
i.e. dereferences SG list when orig_nents == 0, but this is a separate
story.

Andy Shevchenko (2):
  spi: Don't mark message DMA mapped when no transfer in it is
  spi: Check if transfer is mapped before calling DMA sync APIs

 drivers/spi/spi.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

-- 
2.43.0.rc1.1336.g36b5255a03ac